Answer:
It is in standard form because the exponents are in order from highest to lowest.
Explanation:
![13y^8-4y^7+3y](https://img.qammunity.org/2019/formulas/mathematics/middle-school/on1keac8lgck9hyo96ny9m21tfut57t8n7.png)
When the polynomial is in standard form then the exponents of variables should be in the order from highest to lowest
For example,
is in standard form. Because exponent starts at x^2 and then its decreasing to x^1
![13y^8-4y^7+3y](https://img.qammunity.org/2019/formulas/mathematics/middle-school/on1keac8lgck9hyo96ny9m21tfut57t8n7.png)
Here the exponent starts at y^8 and then y^7 and then y
So the given polynomial is in standard form.
It is in standard form because the exponents are in order from highest to lowest.